Feeding mechanism for button-sewing machines.



H. WALDES.

PEBDING MEGHANISM PoR BUTTON SEWING MAGHINBS.

i f APPLIUATION FILED JULY 9, 1913. l l 10,84% Pamed sept. 15, 1914.

2 SHEETS-SHEET l.

H. WALDES. PBBDINGMBOHANISM FOR BUTTDN SEWING MACHINES.

AEPLIOA'lfIoN FILED JULY 9, 1913.

l, l 10,843. Patented Sept. 15, 191%.

2 SHEETS-SHEET 2.

' to the article to be provided with the clo- Y elevation showing a form` of couplingl for fil this shaft the mechanism for feeding the Vpredetermined distance between the feed of "strip, F ig. 5 a side elevation of the device 'erated The shaft 3 is intermittently rotated by means of a coupling located be- HEINRICH Wannes, or

wnscnowrrz,

ramena NEAR rassen, ans'rnini-i-iinvsamr.i4

FEEDING MECHANISM FOR BUTTON-SEWING MACHINES.

misses.

Specification of Letters Patent.

raeearea sept. is, 'isis Application filed July 9, 1913. Serial No. 778,051.

To all whom t may concern Be it known tliatl, HniNiiioH VVALDES, i subject of the Emperor of ustriadlungary, and residing at lVrschowitf/i, near Prague, Bohemia, Austrian Empire, have invented a certain new and useful Improvement in Feeding Mechanisms for Button-Sewing Machines. of which the following is a full, clear, and exactdescription.

The parts of spring pressed buttons are now'not usually sewn onto material formingr the closure, but are attached toa strip of material or tape. which is then sewn on sure.l

The button parts are attached by means 0f sewing machines of the known kind, the needle of which passes through the holes of the button piece and sews the same on to the strip.

Now the present invention consists of means for feeding the parts of the spring pressed button at regular intervals to the sewing machine, under the need-le and means for transporting the strip or tape to which the button parts are to be sewn, a certain eac-h button part.

In the accompanying drawings `which illustrate one fornA of eii'ibodying the present inventioinlfigure l. is a side elevation of the'device, Fig. 2a plan, Fig. 3 a rear elevation, Fig. l a side elevation of the means for clamping and transporting1 the for feeding the button part, Fig. 6 a front intermittently operating the device, Fig. 7

showing the The sewing machine itself is not illustrated, the axis of the same being indicated in Fig. 2 by means of the line 1.

A shaft 3 (Fig. l) is mounted on the Work table ofthe sewing machine' and driven from the main shaft Q of the latter y means of chain gearing. By means of buttons and transporting` the strip is op tween the boss of the chain wheel 4f and 4shaft 3. i A collar 8 is provided .23 and opens up into the shaft 3 and illustrated in Figs. (l, 27, 8

i u i and 9. The coupling consists oi a bolt 5 of segmental cross section and adapted to i rotate in a groove of the shaft 3. Thisbolt 5 lies partly in the groove but is capable, when turned axially to into one of a series of recesses l0 formed in thev boss of the chain wheel 4 and when in this position to couple the latter to the on the shaft 3 and the bolt 'lias a radial arni G adapted to turn through an arc limited by a recess 7 in said collar, in which the said arm lies. fijcontractile spiral si'ning 9 is lconnected at one end to the pin 8 on the collar S fixed to the shaft 3 and at the other end to the radial arm (S and operates to normally hold said arm against one side of the recess 7 iii the position in which it is shown in Fig. ln this position the segmental bolt above the periphery of the shaft 3 and engages the hub of the chain wheel at yand locks it to the shaft. 'A sliding stud 1l is mounted in the machine frame as best shown in Fig. l. A. bell crank lever 12 disposed on a. pivot stud i2 engages a stud l1 on said sliding stud 1l for thrusting the latter'` into the path of the arm G and retracting it therefrom. A. horizontal lever 13 pivoted on a bracket-13 ends with the other arm of the bell crank lever l2. A rod 132 connects the inner end of the lever fil-3 with the sewing machine mechanism not shown. lVhen the sliding sind `l1 is thrust into the path of the arm 6 and the turning of the shaft 3 brings said arm into contact with said stud, the arm is held stationary until the parts assume the position shown in l? 8, whereby the segmental holt 5 is turned so that it is flush with the periphery of the shaft 3 or lentirely wit-hin the groove thereof, and the chain wheel 4. is then free to turn loosely on the shaft 4. i

Cam disks are mounted lon the shaft one of which 14 operates to reciprocate a hai' lil by means of a double arni lever l5. The bar 1.6 carries stops 17,"18 between which the bifnrcated arm l) of a pivotally mounted bell crank lever engages. The other arm 20 of the latter engages by a fork and pin connection with a slide 2l moving in a guide way 2Q of aplate. This guidewayl serves for the reception one by one of the buttons gi i deway 24V lying at right angles to the same and formed in the plate 2. having mounted therei` a movable'slidc 9.(3. rlhe latter is provided with au upwardly cxtendii'ig pin 12,7 adaptedto extend with one edge 5 projects l is connected at its outer,

65 theshaft 3 to engage the bifurcated endof an arm 29 pivotally 'supported on theoar. 165.- and depressed by means of a 'spring' 28. :'.This' arm 29, moves with the barl Iand alsopasses along a cam surface 30 at the side ofH one of the., grooves forming the guidewa '24, so

. that, on the "rearward movement o -the bar 16,-it lwill be raised by the said cam surface end release thev pin 2'( ofthe slide 26, allow- 1'0 the latter to remain stationary. In this stationaryjposition'pf theslide 26, the ends i ofthe two' guideways 22 and 24 open up one into 'the other',.so thatthe button 23 may be pushed fromlthe-'groove 22 'into the groove of themachneby the `slide 26 which has in the. meantime beenfmoved forward again. As'they bar v16`. moves'-forward the arm 29 .l s lidesldown''lthe'cam surface '30' and a ain The seondfc disk 32 ofthe shaft 3 operates horizontally guided rod 34 by means ofa 'slotted rocking lever 33 and 'a slide 'rod 35. The rod. 34 is'connected by means-.of a, bracket a'rm 36 (Fig. 4) 'to a slide 37 guided in a guideway 38 of a plate 30 39 attached .to thefbase plate of the device.

The slide 37 passes .through aslot of a sec ond slide 40 a so guided in the plate 39, and zada ted Ito support `the strip' 41y to which the uttons are to be sewn'.

yThe'slde 37 is provided with an upwardly extending nose42 `(Fig. 3) which is located between "a bearing 43 on the slide 40 and a downwardly extending finger 44 mounted onone end fof a double llever ivotally supported in the said bearing an the opposite end of which carries a -cla'm ing piece 45 adapted to press. on the sli'e 40` andI to clamp the ystrilp 41 thereto, so that it will be moved' with t e slide.' 4 l 45 Thus ifthe rod 34 is moved backwardly the nose 42 of slide37 will Contact with the finger 44 a'ndfclamp the strip 41 to thesslide 40. yOn the further movement of the rod 34 the strip'will he moved a distance A correspondirg to the` distance a art of the buttons." s the rod 34 per orms its return movement the nose 42 will release the finger 44,' thefpres'ser or clampin piece is raised from the vstrip', which latter asin the meantime been retained by the presser foot of the.l sewing 4machine and the nose 42 then 'engages the bearin v43 and on further movement returns the s ide .to its 'initial position.

The two mechanisms above described cof.

,y 0 erate in the .following mannerz--Fg` 2 s owe the parts in their resective positions' just as the coupling of t y to' come into engagement anda button has been sewn on tqhthe band. The coupling of t e chain wheel 4 `is,.ef ec'ted jeansfoffthe aijrrl, 20 of the bell crank"` lever, inorder`tof`be `passed under the needle' 'mg machine and for intermittent e shaft 3 is' by the arm 6 under the action of the' 'sprin' 9 after the withdrawal ofthe slid", std

11. At the Sametime the needle sewing machine was.raisedandwthestrip ire leased. The'shaft 3 is conseqiientlylrotated I,XJ thus turning the cam disks 14V and bar 16 and rod-3 4 are each reciproctdlo e" during the vengagement .of `the "members 4 1and 5. The .reci rocation of t,l1e.p,arts and 34 causes a resh .buttonto the machine and simultaneously"eifect'f,l transport of the strip. In orderltc'i to adJust the transport of theystriv ,th 34 is connected .tothe end oftiielion y lcver 33 by meansfof a screw and, Slotff 30 nection 46 (Fig.y 3 so that thev length? off. transport may be a' justed. I claim as my invention:v y f A1. Device for feeding 'parts ofspring. pressed buttons sin ly tothe needle oalsi'# g5 ing machme and orV intermittently trailsporting the band of fabric ,to vvlichfthe;x id parts are to be attachedcomprisi'ng wged v guideway to receive the said button part,

slide to move the 'same'under-,th'e needle 'ofn the sewingmachine, a .secondlfslideov which the band'passes, a clamping dvi periodically clamp said band ttheslid, shaft having cam disks thereon to opera said slides, a drivinggeajx` loosely lmounted' onI said shaftand means for locking sid gear to its shaft.; v g

,2. ADevicey foreedingfparts y pressed. buttons sin lyto theneedleoflasewq' ing machine and or intermittently-tran porting the band of fabric towhichthe sai .'-l

parts are to be attached com rising afeedi; guideway to receivethe said 'hutten slide -to move the same under thern'edle n the sewing machine,` a second "slide'Y which the band passes, a clampin devicet'l '31- periodically vclamp said bandto-t e slide, '117. shaft having camdisks thereoniand means for. intermittently rotating the same a sin le'.. rotation, sliding bars. reci'roca'ted sa d 11b cam disks, and connections hetweenseidbars; w and slides to operate' the slides'to 'tra's 'tfw the loutton part4 to sewiiigfpostion an ft transport the band and mea'nsiforlreleasiiig.- the band clamp at the e d of each ressed buttons singly to the needleiof use porting theband tf-fab'ric a) trainen. la parts are to be attachedcorn rising affeeglj guideway to receive thesaid' uttofn part, a: slide to move the samefunderf. eneedle of., the -sewin machine, a-isecondf'slidffover l; which .the and passe's, a elampin device to` 12'5- periodically clamp said band'to ,t slide, as' -''y shaft' having cam `dis-ks;,thereon and: means for intermittently rotating the'same a singleV rotation, sliding. batjeeci rocated by said y camdlsks, and connections etween said bars and slides to operate the slides to transport thev button part to the needle and to transthe band, means for releasing the band clamp at the end of each feeding operation d an adjustable connection between the d 'transporting slide and its operating 1"..1 In a button sewing machine, the, combination of a button feed mechanism, a but ton 'strip feed mechanism, a cam shaft rovided with a longitudinal groove, eam isks .on-said camshaft for actuating said mechavm msfrespectively, and a clutch device on lgaging said arm and normally holding said segmental rod in engagemeht with said hub,

a'movable stud and means for thrusting and retraeting'said movable stud into and'out of the path of said radial arm.- i

-5. A button feed mechanism for a sewing machine comprisinga main guideway having a button rest at one end adapted to hold a button in position to be stitched, a slide in said guideway movable parallel with the feed of the material and provided with an upward stud, a stationary lifting cam adjacent to said slide7 a guideway disposed laterally to the main guideway7 an auxiliary slide therein adapted to push a button therefrom into the main guideway, an endwise reciprocatory slide bar disposed parallel to the feed of the material and provided with stops, means for intermittently reciprocating said bur, a. hell crank lever whereof one end engages said auxiliary slide and the other end is engaged by said slide bar between said stops, and a spring depressed arm pivoted on said slide bar and adapted to engage the upward stud of said main slide during the movement of said bar and to be released therefrom by said cam during said movement.

In testimony whereof I allx my signature in the presence of two Witnesses.

HEINRICH WALDES.

Witnessesz ARTHUR SCHWEINBURG. ADoLrH FISCHER. 

